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How to downgrade a RAID array?


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#1 SirEvan

SirEvan

    Neowinian Senior

  • Joined: 17-April 03
  • Location: Santa Clara, CA
  • OS: Windows 8
  • Phone: HTC One (AT&T)

Posted 14 September 2012 - 03:11

I've been cleaning up space on my RAID 5 array, and now have more than enough space freed that I can make at least one drive a hot-spare (previously had a 8 x2 RAID 5 array). I know how to do an online expansion to go from n->n+1 drives (7-8, etc) but i haven't seen very many resources on how to remove a drive from an array.

I've got a dell perc 6/i controller, and when I try doing something like marking a drive offline, I don't see any options in megaraid manager to rebuild the array as a 7 drive array. am I missing something, or is there no way to easily to downgrade an array from a larger array to a smaller one? Recently we had quite a few drives fail in arrays at work, and it got me worried aobut possibly loosing more than 1 drive in my personal array, so I'd like to have at least one drive configured as a hot-spare.

Thanks.


#2 Vice

Vice

    Bye!

  • Joined: 03-September 04

Posted 14 September 2012 - 03:14

Can't. You would need to erase and start over.

#3 OP SirEvan

SirEvan

    Neowinian Senior

  • Joined: 17-April 03
  • Location: Santa Clara, CA
  • OS: Windows 8
  • Phone: HTC One (AT&T)

Posted 14 September 2012 - 03:46

Can't. You would need to erase and start over.


Lame. I had a feeling that was the case since I couldn't find an option to rebuild the Raid 5 array after a drive was offline/removed.

Thanks!



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